Datis If you have a sulfur sensitivity, glutathione can be problematic. Glutathione is primarily made up of sulfur, which can cause issues for those with a sulfur sensitivity. While Glutathione is Sulfa Allergy: What It Is and How to Avoid It Sulfa, Sulfite & Sulfate: Allergy Risk or No Concern? This is what happens when you are allergic to Sulfa : r WTF A Comprehensive Review of Sulfonamide Hypersensitivity: Implications for Clinical Practice Clinical Reviews in Allergy & Immunology Springer Nature Link